Fravia: »Useful for a quick evaluate with your eyes (and "zen-searcher feelings") session. A pity their index is Lycosian
The refine option is in-built: the SERPs (results pages) organize the information by vertical columns of refining significance (if available). Sometime the results are kinda weird (rapidshare gives one column "cindi sexonthebeach" for instance), but they offer two options: "more" and "related".
There's also an "integrated history feature" for unwashed that don't know how to open a link inside a new tab.« Source